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Note Borrowings (Repurchase agreements accounted for as secured borrowings) (Detail) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 281,529 | $ 390,921
Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 281,529 | $ 390,921
Repurchase liability weighted average interest rate | 2.43% | 1.66%
US Treasury Securities | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 237,621 | $ 279,373
Repurchase liability weighted average interest rate | 2.54% | 1.75%
US Treasury Securities | Within 30 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 138,689 | $ 148,516
Repurchase liability weighted average interest rate | 2.56% | 1.70%
US Treasury Securities | After 30 to 90 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 79,374 | $ 87,357
Repurchase liability weighted average interest rate | 2.47% | 1.70%
US Treasury Securities | After 90 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 19,558 | $ 43,500
Repurchase liability weighted average interest rate | 2.72% | 2.00%
Obligations of U.S. Government sponsored entities | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 6,055 | $ 66,056
Repurchase liability weighted average interest rate | 2.45% | 1.64%
Obligations of U.S. Government sponsored entities | Within 30 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 0 | $ 30,656
Repurchase liability weighted average interest rate | 0.00% | 1.77%
Obligations of U.S. Government sponsored entities | After 30 to 90 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 6,055 | $ 19,463
Repurchase liability weighted average interest rate | 2.45% | 1.48%
Obligations of U.S. Government sponsored entities | After 90 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 0 | $ 15,937
Repurchase liability weighted average interest rate | 0.00% | 1.60%
Mortgage Backed Securities | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 27,324 | $ 31,383
Repurchase liability weighted average interest rate | 2.35% | 1.51%
Mortgage Backed Securities | Within 30 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 6,859 | $ 31,383
Repurchase liability weighted average interest rate | 1.15% | 1.51%
Mortgage Backed Securities | After 90 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 20,465 | $ 0
Repurchase liability weighted average interest rate | 2.75% | 0.00%
CMO | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 10,529 | $ 14,109
Repurchase liability weighted average interest rate | 0.25% | 0.28%
CMO | Within 30 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 10,529 | $ 14,109
Repurchase liability weighted average interest rate | 0.25% | 0.28%

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- Definition Interest rate on the amount to be repaid to the counterparty to the repurchase agreement when the carrying amount (or market value, if higher than the carrying amount) of securities or other assets sold under the repurchase agreement exceeds 10 percent of total assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)(i)(A)(ii)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49176635&loc=d3e9760-107771 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(1)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)(a)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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